Dr. Alessandro Mazza Profile

Dr. Alessandro Mazza

Researcher at IBIMET

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Publications (3)

Proceedings Article | 2 October 2017 Paper

Joint use of weather radars, satellites, and rain gauge for precipitation monitoring

A. Antonini, S. Melani, A. Mazza, A. Ortolani

Proceedings Volume 10424, 104240J (2017) https://doi.org/10.1117/12.2278409

KEYWORDS: Radar, Satellites, Meteorological satellites, Earth observing sensors, Remote sensing, Meteorology, S band, Satellite imaging, Floods, Soil science

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Intense precipitation phenomena occurring over the Tyrrhenian area between Tuscany, Corse Sardinia, and Liguria very often cause floods with considerable socio-economic damages. The need of monitoring such events has led to the implementation of an observing weather radar network: it firstly started with an S-band radar in Corse, three C-band radars in Liguria, Tuscany and Sardinia. Recently, the implementation of an X–band network of three radars in Tuscany and two further C-band radars in Sardinia completed the network. This work shows how this network can be used for the characterization of weather events, following their development and dynamics and providing some information about their possible evolution. Furthermore, the use of meteorological satellites observations can upscale the area of interest to the mesoscale level and provide an enlarged temporal overview. For instance, the Meteosat Second Generation satellites provide useful information about the air mass distribution, convective phenomena occurrence and microphysics in the observed scene, by combining different spectral channels. Finally, ground based observations are meaningful for assessing the observing capabilities of other instruments and for characterizing the effects on soil surface. For some selected case studies, the different observing instruments were compared and a methodology to integrate them synergically is presented and tested. Weather radars correctly detect the rainfall systems and their motion in all the case studies. Clearly, the higher spatial resolution of X-band radars allows detecting the different precipitation areas with great spatial details, while C- and S-band radars can detect phenomena at higher distances. Satellites images have lower spatial resolutions but especially thanks to the RSS (Rapid Scan Service) they can help to detect the growing or dissipating stage of the whole phenomena. Moreover the ground-based network confirms its relevance in improving the identification of the precipitation intensity and in reducing the number of false alarms.

SPIE Journal Paper | 23 October 2015

Recalibration of cumulative rainfall estimates by weather radar over a large area

Alessandro Mazza, Andrea Antonini, Samantha Melani, Alberto Ortolani

JARS, Vol. 9, Issue 01, 095993, (October 2015) https://doi.org/10.1117/12.10.1117/1.JRS.9.095993

KEYWORDS: Environmental sensing, Radar, Meteorology, Reflectivity, Calibration, Spatial resolution, Data modeling, Error analysis, Remote sensing, Climatology

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Proceedings Article | 17 October 2014 Paper

Estimates of cumulative rainfall over a large area by weather radar

Alessandro Mazza, Andrea Antonini, Samantha Melani, Alberto Ortolani

Proceedings Volume 9242, 92420V (2014) https://doi.org/10.1117/12.2066492

KEYWORDS: Radar, Calibration, Meteorology, Reflectivity, Sensors, Satellites, Clouds, Spatial resolution, Remote sensing, Atmospheric optics

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